.page-strength {
  --strength-gap: clamp(var(--space-3), 3.6vw, var(--space-6));
  --strength-photo-ratio: 5 / 3;
  --strength-banner-ratio: 16 / 7;
}

/* ---------- 首屏 ---------- */
.page-strength .strength-hero {
  position: relative;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  overflow: hidden;
}

.page-strength .strength-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: none;
}

.page-strength .strength-hero__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-strength .strength-hero__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-block: clamp(var(--space-6), 8vw, var(--section-y-lg));
}

.page-strength .strength-hero__crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-strength .strength-hero__crumbs a {
  color: inherit;
  text-decoration: none;
}

.page-strength .strength-hero__crumbs a:hover {
  color: var(--color-contrast-ink);
}

.page-strength .strength-hero__crumbs > * + *::before {
  content: "/";
  margin-inline-end: var(--space-1);
  color: var(--color-contrast-line);
}

.page-strength .strength-hero__note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.page-strength .strength-hero__note .vert-mark {
  color: var(--color-contrast-accent);
}

.page-strength .strength-hero__title {
  margin: 0;
  max-width: 15ch;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.012em;
  color: var(--color-contrast-ink);
}

.page-strength .strength-hero__lead {
  margin: 0;
  max-width: 54ch;
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  line-height: 1.72;
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-strength .strength-figs {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: var(--space-4) 0 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-strength .strength-fig {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-strength .strength-fig__num {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: var(--tracking-heading);
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-ink);
}

@supports ((background-clip: text) or (-webkit-background-clip: text)) {
  .page-strength .strength-fig__num {
    background-image: linear-gradient(100deg,
      color-mix(in srgb, var(--color-primary) 48%, var(--color-contrast-ink)) 0%,
      var(--color-contrast-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.page-strength .strength-fig__unit {
  font-size: var(--text-lg);
  margin-inline-start: 0.12em;
  letter-spacing: 0;
}

.page-strength .strength-fig__label {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-strength .strength-fig__meta {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

/* ---------- 分组导航 ---------- */
.page-strength .strength-nav {
  background: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-strength .strength-nav__list {
  list-style: none;
  margin: 0;
  padding: var(--space-2) 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
}

.page-strength .strength-nav__item {
  display: inline-block;
  padding-block: 4px;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--color-ink-soft);
  border-bottom: var(--border-thick) solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-strength .strength-nav__item:hover,
.page-strength .strength-nav__item:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-strength .strength-nav__item:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 分组容器 ---------- */
.page-strength .strength-group {
  padding-block: var(--section-y);
}

.page-strength .strength-group--relations {
  background: var(--color-surface-alt);
}

.page-strength .strength-group--gap {
  background: var(--warm-band), var(--color-surface);
}

.page-strength .strength-head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  border-top: var(--border-thick) solid var(--color-ink);
  padding-top: var(--space-3);
}

.page-strength .strength-head .section-head__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.page-strength .strength-head .section-head__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-strength .strength-head .section-head__note {
  grid-column: 1 / -1;
  margin: var(--space-1) 0 0;
  max-width: var(--measure);
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 指标卡 ---------- */
.page-strength .strength-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-strength .strength-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  min-width: 0;
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-top: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-sm) var(--radius-sm) var(--radius-md) var(--radius-md);
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.page-strength .strength-card:hover,
.page-strength .strength-card:focus-within {
  background: var(--color-surface-deep);
  transform: translateY(-2px);
}

.page-strength .strength-card:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

.page-strength .strength-card__num {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
  transition: color 0.18s ease;
}

.page-strength .strength-card:hover .strength-card__num,
.page-strength .strength-card:focus-within .strength-card__num {
  color: var(--color-accent);
}

.page-strength .strength-card__unit {
  font-size: var(--text-lg);
  margin-inline-start: 0.14em;
  letter-spacing: 0;
  color: inherit;
  opacity: 0.82;
}

.page-strength .strength-card__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.35;
  color: var(--color-ink);
}

.page-strength .strength-card__say {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

.page-strength .strength-card__detail {
  display: grid;
  gap: var(--space-1);
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-strength .strength-card__row {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-strength .strength-card__row span {
  display: inline-block;
  margin-inline-end: var(--space-1);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

@media (min-width: 980px) and (hover: hover) {
  .page-strength .strength-card__detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height 0.22s ease, opacity 0.22s ease, padding-top 0.22s ease, border-color 0.22s ease;
  }

  .page-strength .strength-card:hover .strength-card__detail,
  .page-strength .strength-card:focus-within .strength-card__detail {
    max-height: 280px;
    opacity: 1;
    padding-top: var(--space-2);
    border-top-color: var(--color-line);
  }
}

/* ---------- 分栏 + 行式条目 ---------- */
.page-strength .strength-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.page-strength .strength-split__main {
  min-width: 0;
}

.page-strength .strength-rows {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-strength .strength-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-strength .strength-row:first-child {
  padding-top: 0;
}

.page-strength .strength-row__num {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-strength .strength-group--relations .strength-row__num {
  color: var(--color-accent);
}

.page-strength .strength-row__unit {
  font-size: var(--text-base);
  margin-inline-start: 0.14em;
  opacity: 0.8;
}

.page-strength .strength-row__body {
  min-width: 0;
}

.page-strength .strength-row__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.35;
  color: var(--color-ink);
}

.page-strength .strength-row__body p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

.page-strength .strength-row__meta {
  margin-top: var(--space-1) !important;
  padding-inline-start: var(--space-2);
  border-inline-start: var(--border-thick) solid var(--color-primary-soft);
  font-family: var(--font-heading) !important;
  font-size: var(--text-sm) !important;
  line-height: 1.6 !important;
  color: var(--color-ink-muted) !important;
}

/* ---------- 图片容器 ---------- */
.page-strength .strength-media {
  position: relative;
  display: block;
  width: 100%;
  margin: 0;
  overflow: hidden;
  aspect-ratio: var(--strength-photo-ratio);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-contrast-surface);
}

.page-strength .strength-media--banner {
  aspect-ratio: var(--strength-banner-ratio);
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}

.page-strength .strength-media .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-strength .strength-media .media-frame__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-strength .strength-media .media-frame__body {
  position: absolute;
  inset: auto 0 0 0;
  margin: 0;
  padding: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-contrast-ink);
}

/* ---------- 关系条目 ---------- */
.page-strength .strength-links {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-strength .strength-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  min-width: 0;
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  border-inline-start: var(--border-thick) solid var(--color-accent);
}

.page-strength .strength-link__pair {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin: 0;
  font-family: var(--font-heading);
  font-variant-numeric: tabular-nums;
}

.page-strength .strength-link__from {
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-strength .strength-link__arrow {
  color: var(--color-ink-muted);
}

.page-strength .strength-link__to {
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-accent);
}

.page-strength .strength-spark {
  width: 120px;
  height: 28px;
  color: var(--color-primary);
}

.page-strength .strength-link__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  color: var(--color-ink);
}

.page-strength .strength-link p:not(.strength-link__pair) {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: 1.76;
  color: var(--color-ink-soft);
}

/* ---------- 改进条目 ---------- */
.page-strength .strength-gaps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-strength .strength-gap {
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.page-strength .strength-gap[open] {
  border-color: var(--color-ink-muted);
}

.page-strength .strength-gap__head {
  cursor: pointer;
  padding: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  color: var(--color-ink);
  list-style: none;
}

.page-strength .strength-gap__head::-webkit-details-marker {
  display: none;
}

.page-strength .strength-gap__head::before {
  content: "＋";
  display: inline-block;
  margin-inline-end: var(--space-2);
  font-size: var(--text-base);
  color: var(--color-accent);
}

.page-strength .strength-gap[open] .strength-gap__head::before {
  content: "－";
}

.page-strength .strength-gap__head:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: -2px;
}

.page-strength .strength-gap__body {
  padding: 0 var(--space-3) var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  margin-top: calc(var(--space-1) * -1);
  padding-top: var(--space-3);
}

.page-strength .strength-gap__body p {
  margin: 0 0 var(--space-2);
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: 1.76;
  color: var(--color-ink-soft);
}

.page-strength .strength-gap__next {
  margin: 0 !important;
  padding-inline-start: var(--space-2);
  border-inline-start: var(--border-thick) solid var(--color-highlight);
  font-family: var(--font-heading) !important;
  font-size: var(--text-sm) !important;
  color: var(--color-ink) !important;
}

.page-strength .strength-gap__next span {
  display: block;
  margin-bottom: 2px;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

/* ---------- 行动出口 ---------- */
.page-strength .strength-exit {
  padding-block: var(--section-y);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-strength .strength-exit__box {
  display: grid;
  gap: var(--space-3);
  padding: clamp(var(--space-3), 4vw, var(--space-6));
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
}

.page-strength .strength-exit__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-strength .strength-exit__lead {
  margin: 0;
  max-width: var(--measure);
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: 1.76;
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

.page-strength .strength-exit__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-strength .strength-exit__list li {
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: 1.72;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.page-strength .strength-exit__list a {
  font-family: var(--font-heading);
  color: var(--color-contrast-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-accent) 55%, transparent);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-strength .strength-exit__list a:hover,
.page-strength .strength-exit__list a:focus-visible {
  color: var(--color-contrast-ink);
  border-bottom-color: var(--color-contrast-ink);
}

.page-strength .strength-exit__list a:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-strength .strength-cards--three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-strength .strength-gaps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-strength .strength-figs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-strength .strength-row {
    grid-template-columns: minmax(128px, 190px) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-strength .strength-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-strength .strength-split--flip {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-strength .strength-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-strength .strength-exit__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3) var(--space-6);
  }

  .page-strength .strength-media--banner {
    aspect-ratio: 21 / 6;
  }
}

@media (min-width: 980px) {
  .page-strength .strength-cards--three,
  .page-strength .strength-cards--two {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-strength .strength-cards--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-strength .strength-figs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-strength .strength-gaps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 400px) {
  .page-strength .strength-hero__title {
    max-width: none;
  }

  .page-strength .strength-nav__list {
    gap: var(--space-1) var(--space-3);
  }
}